Personal authentication method, personal authentication apparatus and image capturing device
First Claim
Patent Images
1. A personal authentication method comprising the steps of:
- capturing, by using an image capturing device, a plurality of iris images of a person to be authenticated in which positions of extraneous light reflection are respectively different; and
performing authentication by using said plurality of iris images and registered iris data.
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Abstract
A plurality of iris images of a person to be authenticated in which the positions of extraneous light reflection are respectively different are captured by using an image capturing device. Iris codes, that is, features for authentication, are respectively extracted from the plural iris images, and the plural iris codes thus extracted are respectively compared with a registered iris code, so as to generate a plurality of comparison results. The plural comparison results are integrated to obtain an ultimate comparison score, which is used for the authentication.
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Citations
20 Claims
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1. A personal authentication method comprising the steps of:
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capturing, by using an image capturing device, a plurality of iris images of a person to be authenticated in which positions of extraneous light reflection are respectively different; and
performing authentication by using said plurality of iris images and registered iris data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A personal authentication method comprising the steps of:
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extracting iris data corresponding to features for authentication respectively from a plurality of iris images of a person to be authenticated;
obtaining a plurality of comparison results by respectively comparing said extracted iris data with registered iris data; and
selecting, from said plurality of comparison results, a comparison result with a comparison score not less than a given value or a comparison result with a comparison score not more than a given value, wherein the authentication is performed on the basis of said selected comparison result.
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11. A personal authentication method comprising the steps of
extracting iris data corresponding to features for authentication respectively from a plurality of iris images of a person to be authenticated; -
obtaining a plurality of comparison results by respectively comparing said extracted iris data with registered iris data; and
obtaining a synthesized comparison result by dividing each of said plurality of comparison results into a plurality of blocks and synthesizing said plurality of comparison results in each of said plurality of blocks, wherein the authentication is performed on the basis of said synthesized comparison result.
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12. A personal authentication method comprising the steps of:
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capturing an iris image of a person to be authenticated;
determining, on the basis of said iris image, whether or not extraneous light reflection is caused in said iris image; and
capturing a plurality of iris images of said person in which positions of the extraneous light reflection are respectively different and performing authentication by using said plurality of iris images, when it is determined that the extraneous light reflection is caused. - View Dependent Claims (13)
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14. A personal authentication method comprising the steps of:
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measuring an intensity of near-infrared light in an environment where an iris image is captured; and
capturing a plurality of iris images of a person to be authenticated in which positions of extraneous light reflection are respectively different and performing authentication by using said plurality of iris images, when said intensity is not less than a threshold value.
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15. A personal authentication apparatus comprising:
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an image capturing unit for capturing a plurality of iris images of a person to be authenticated in which positions of extraneous light reflection are respectively different; and
an authentication processing unit for performing authentication by using said plurality of iris images captured by said image capturing unit and registered iris data. - View Dependent Claims (16, 17, 18, 19)
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20. A device for capturing an iris image for personal authentication, comprising:
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a camera; and
means for instructing a person to be authenticated on a direction for moving his or her hand holding said device.
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Specification